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Issy-les-Moulineaux, Ile-de-France, France • Hybrid
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The apprentice will support the Controlling team with month-end closing, performance reporting, and KPI analysis. They will also assist in preparing ad hoc reports and data preparation for the 2027 target-setting process.
Candidates must be currently pursuing a Master 1 or Master 2 degree in finance, accounting, or administration. Proficiency in Office applications and basic knowledge of Power BI and SQL are required.
Are you looking for an apprenticeship starting in September 2026, where you can quickly gain skills and participate in impactful projects?
BuyIn, a common company between Orange and Deutsche Telekom is the largest procurement alliance in the TelCo world. We feature sourcing projects over three continents and negotiating €20 billion per years for 45+ customers. At BuyIn, we continuously strive to innovate for our stakeholders, 5G, IoT, AI, Cloud and Robotics are part of our day-to-day business operations.
By prioritizing environmental stewardship, social responsibility, and ethical business practices, our company is committed to building a sustainable future for both our business and the planet.
Description of domain/function:
With BuyIn, you will be given the opportunity to be part of the small team dedicated to Performance Controlling in a multicultural, fast-moving and challenging environment! Our flex and open office in Issy-les-Moulineaux is only a few minutes to the Tram, RER and metro stations.
Your responsibilities
As an apprenticeship, you will support the Controlling team under the supervision of experienced team members. This includes typical Controlling activities in the areas of planning, monitoring and analysis:
Support the month-end closing process, ensuring the timely, accurate and reliable reporting of procurement performance data.
Monitor and analyse KPIs, identifying trends and opportunities for continuous improvement.
Prepare impactful presentations to communicate insights and performance results to stakeholders.
Maintain regular reports, ensuring accuracy, consistency and alignment with customer and stakeholder requirements.
Prepare ad hoc reports and analyses by collecting, validating and consolidating data from multiple sources.
Support the 2027 target-setting process through data preparation, reporting and analysis.
Develop knowledge of world-class procurement practices, processes and performance management.
Your profile
Required Qualifications & Skills:
Currently pursuing a degree Master 1 or Master 2 in finance, accounting, or administration.General
understanding of Accounting and Controlling concepts, obtained during studies and previous internships
Intermediate or preferably advanced experience with Office applications (Excel, PowerPoint, Word)
Basic knowledge of Power BI (data modelling, visualization, Power Query, DAX).
Basic knowledge of SQL for data manipulation.
Willingness to learn and adapt to new technologies, e.g. RDBMS concepts, Python, Azure, data warehousing, ETL tool etc.
Why Joining BUYIN
A unique opportunity to gain practical Finance experience in a leading telecommunications joint venture.
Mentorship and guidance from experienced finance professionals.
Exposure to a diverse range of Finance functions and projects.
A dynamic and collaborative work environment
A “human sized” company, composed of a talented team of 30+ nationalities empowering the workplace with values of Teamwork, Commitment and Respect
Flexible working conditions (hybrid working, working from abroad) and time unique opportunity to gain practical Finance experience in a leading telecommunications joint venture
Cutting-edge procurement with topics on AI, IoT, and Sustainability
Exciting, multifaceted projects for our mother companies (Orange & Deutsche Telekom) & partners
Diversity is a part of BuyIn We look forward to receiving your application regardless of gender, nationality, ethnic and social origin, religion, philosophy of life, disability, age, sexual orientation, or identity.
Strategic Procurement powered by Smart Analytics (Bonn & Paris)
BuyIn is the strategic procurement joint venture between Deutsche Telekom and Orange. With sourcing activities spanning five continents, we deliver sustainable procurement excellence across the telecommunications industry, enabling people to communicate freely and stay connected. Since our foundation in 2011, we have grown into a distinct, multicultural organization that brings together the combined market power of two leading telecom operators. Leveraging smart analytics and insights from more than 40 markets worldwide, we develop tailored procurement solutions that ensure the best products reach consumers efficiently and responsibly. Being part of BuyIn means being part of a diverse international community representing more than 30 nationalities. We conduct sustainable and ethical procurement across key strategic domains including network infrastructure, customer equipment, and information technology. Our culture and values reflect our global footprint and our strong commitment to diversity, inclusion, and collaboration. Today, we rank among the top five global telecommunications customers and are recognized for delivering significant value to our alliance partners, consistently outperforming the market year after year.
Offices: c/o Regus, Rue des Colonies, 11, Brussels, 1000, BE · Friedrich-Ebert-Allee 71, Bonn, North Rhine-Westphalia 53113, DE · Hilpertstraße 20a, Darmstadt, 64295, DE · 12, rue Rouget de Lisle, Issy-les-Moulineaux Cedex, 92442, FR · Bâtiment 3 "Belle-Ile", 9, rue du Chêne Germain, Cesson-Sévigné, 35510, FR
